@jackmi
Labels are skipped to avoid overlapping. However, to show all the labels, you can set the interval to 1 in axisX (vertical in case of the bar chart).
If this doesn’t fulfill your requirement, kindly create a JSFiddle reproducing the issue you are facing and share it with us along with the sample data and a brief description of your requirement so that we can look into the code, understand the scenario better and help you out?
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Shashi Ranjan
Team CanvasJS